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The Name Service Switch (NSS) is a feature found in the standard C library of various Unix-like operating systems that connects a computer with a variety of sources of common configuration databases and name resolution mechanisms. [1]
dnsmasq caches DNS records, reducing the load on upstream nameservers and improving performance, and can be configured to automatically pick up the addresses of its upstream servers. dnsmasq accepts DNS queries and either answers them from a small, local cache or forwards them to a real, recursive DNS server.
MaraDNS is a free software DNS server by Sam Trenholme that claims a good security history and ease of use. [9] [10] In order to change any DNS records, MaraDNS needs to be restarted. Like djbdns dnscache, the MaraDNS 2.0 stand-alone recursive resolver ("Deadwood") does not use threads.
The DNS service is also available for Tor clients. [13] Users can set up the service by manually changing their DNS resolvers to the IP addresses below. Mobile users on both Android and iPhone have the alternative of downloading the 1.1.1.1 mobile application, which automatically configures the DNS resolvers on the device. [14]
Linux distributions use the Name Service Switch configuration file /etc/nsswitch.conf [9] in which mDNS name resolution was added via the mdns4_minimal plugin to nsswitch. In this configuration, where mdns4_minimal precedes the standard dns option, which uses /etc/resolv.conf, the mDNS resolution will block subsequent DNS resolution on the ...
In this overview of operating system support for the discussed DHCP server, the following terms indicate the level of support: . No indicates that it does not exist or was never released.
Most email software and applications have an account settings menu where you'll need to update the IMAP or POP3 settings. When entering your account info, make sure you use your full email address, including @aol.com, and that the SSL encryption is enabled for incoming and outgoing mail.
Dynamic IP addresses present a problem if the customer wants to provide a service to other users on the Internet, such as a web service. As the IP address may change frequently, corresponding domain names must be quickly re-mapped in the DNS, to maintain accessibility using a well-known URL.